Dynamic Radar Cruise Control System

CRUISE CONTROL: DYNAMIC RADAR CRUISE CONTROL SYSTEM: C1A11,C1A14: Front Radar Sensor Incorrect Axial Gap

DTC C1A11 - Front Radar Sensor Incorrect Axial Gap

DTC C1A14 - Front Radar Sensor Beam Axis Not Adjusted

DESCRIPTION

When the vehicle is determined to be driving in a straight line or on a slow curve based on signals from the yaw rate sensor, etc., the front millimeter wave radar sensor assembly performs a self diagnosis to check if the sensor beam axis is deviated from the vehicle movement direction. When the front millimeter wave radar sensor assembly's beam axis is deviated, the driving support ECU detects this, and outputs DTC C1A11.
After installing a new front millimeter wave radar sensor, if the sensor beam axis adjustment is not performed, DTC C1A14 is output.






INSPECTION PROCEDURE

PROCEDURE

1. ADJUST FRONT MILLIMETER WAVE RADAR SENSOR
(a) Adjust the front millimeter wave radar sensor Adjustments.
NEXT -- Continue to next step.
2. ADJUST OBJECT RECOGNITION CAMERA
(a) Adjust the object recognition camera Adjustments.
HINT: After performing the front millimeter wave radar sensor's beam axis adjustment it is necessary to perform the object recognition camera's beam axis adjustment.

NEXT -- Continue to next step.
3. CHECK FOR DTC
(a) Using the Techstream, enter the following menus: Powertrain / Radar Cruise / Trouble Code.
(b) Select "Clear" and clear the data.
(c) Recheck for DTC.
OK:
DTC C1A11 or C1A14 is not output.
HINT: After performing the radar beam axis adjustment, if the same DTC is output again after the DTC detection conditions are met, replace the driving support ECU.

NG -- REPLACE DRIVING SUPPORT ECU
OK -- END